Unable to send a SOAP request properly designed using SAAJ

[Kumar Raja]

Hello All,

I'm trying to experiment by sending a SAAJ built SOAP request to my webservice. My service is designed as below

package org.example;
@WebService()
@SOAPBinding(
		use = SOAPBinding.Use.LITERAL,
		parameterStyle = SOAPBinding.ParameterStyle.WRAPPED,
		style = SOAPBinding.Style.DOCUMENT
		    )
public class Calculator {
	public int add(int a, int b) throws Exception{
		System.out.println("Values are "+a+" , "+b);
		return a+b;
	}
}

and my service is running at http://localhost:8080/Calculator/CalculatorService

My SAAJ client is as follows

package com.example;

import java.io.IOException;

import javax.xml.namespace.QName;
import javax.xml.soap.*;
public class SAAJProject {
	public static void main(String[] args){
		try {
			SOAPConnectionFactory sFactory = SOAPConnectionFactory.newInstance();
			SOAPConnection conn = sFactory.createConnection();
			MessageFactory mFactory = MessageFactory.newInstance();
			SOAPMessage request= mFactory.createMessage();
			SOAPPart part = request.getSOAPPart();
			SOAPHeader header = request.getSOAPHeader();
			header.detachNode();
			SOAPBody body = part.getEnvelope().getBody();
			QName qBody = new QName("http://ws.example.org/","add","ns");
			SOAPBodyElement bodyElement = body.addBodyElement(qBody);
			QName parm1 = new QName("http://ws.example.org/","parm1","ns");
			QName parm2 = new QName("http://ws.example.org/","parm2","ns");
			SOAPElement parm1Element = bodyElement.addChildElement(parm1);
			SOAPElement parm2Element = bodyElement.addChildElement(parm2);
			parm1Element.addTextNode("5");
			parm2Element.addTextNode("4");
			request.writeTo(System.out);
			System.out.println("\n");
			SOAPMessage response = conn.call(request,"http://localhost:8080/Calculator/CalculatorService");
			response.writeTo(System.out);
			conn.close();
		} catch (UnsupportedOperationException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (SOAPException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
	}
}

as you can see, I'm printing out the both the request and response and those are as below

request:
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/">
	<SOAP-ENV:Body>
		<ns:add xmlns:ns="http://ws.example.org/">
			<ns:parm1>5</ns:parm1>
			<ns:parm2>4</ns:parm2>
		</ns:add>
	</SOAP-ENV:Body>
</SOAP-ENV:Envelope>

response
<?xml version='1.0' encoding='UTF-8'?>
<S:Envelope xmlns:S="http://schemas.xmlsoap.org/soap/envelope/">
	<S:Body>
		<ns2:addResponse xmlns:ns2="http://ws.example.org/">
			<return>0</return>   //Why 0
		</ns2:addResponse>
	</S:Body>
</S:Envelope>

I tested my service using SOAP UI and I get the result 9 as expected, but with the above code I get the response as "0"

Also, from the debug statement in service, I see the incoming values as 0 and 0 which explains why my result was 0.

But why are the values which I set as 5 and 4 are converted to 0 when it was received by service. Is there any mistake I'm making here in making my SOAP request.

[Ivan Krizsan]

Hi!
Can you post the request generated by soapUI and the request from your client in one and the same post?
If you have time, do compare the two requests for differences.
A common problem when a web service fails to extract parameter values from a request is that element(s) are not in the correct namespace(s).
JAXB fails silently when encountering this kind of problems - in fact, it does not "see" the data since it is not in the expected namespace.
Best wishes!

[Kumar Raja]

Thanks Ivan,

You are right. I used wrong element names param1 and param2 in SAAJ client, instead of arg0 and arg1. My bad